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Question
Given `A = [(1, 4),(2, 3)] and B = |(-4-1),(-3 -2)|`
Find the matrix 2A + B
Solution
`2[(1, 4),(2, 3)] + [(-4 -1),(-3 -2)] = [(2,8),(4,6)] + [(-4 - 1),(-3 -2)] = [(2 - 4, 8 - 1), (4 - 3, 6 - 2)] = [(-2 7),(1 4)]`
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